Red bumps, itchy, blisters on the body, consider the following diseases: 1, herpetic aspergillosis, mainly due to the human body contains autoantibodies that destroy the epidermis, dermal tissue, caused by autoimmune diseases. In terms of treatment, you can take oral niacinamide tablets as well as minocycline hydrochloride capsules, and in severe cases, glucocorticoid drugs such as reinforced pine tablets. In the blister area can be applied halomethasone ointment and other strong hormone, in the vesicular area can be applied compound polymyxin B ointment for the prevention of infection treatment. 2, consider papular urticaria, in the treatment can choose Denide cream application, oral diclaretin dry suspension, strengthen the anti-allergic, anti-itch treatment effect.